Study of reactive and inelastic collisions by time resolved gain spectroscopy. I. Chemical vibrational excitation and vibrational relaxation of HCl occurring with the reaction of hydrogen with chlorine

1975 ◽  
Vol 63 (4) ◽  
pp. 1479-1486 ◽  
Author(s):  
F. Menard‐Bourcin ◽  
J. Menard ◽  
L. Henry
Keyword(s):  
Vibrational Relaxation ◽  
Vibrational Excitation ◽  
Inelastic Collisions ◽  
Time Resolved

Altitude dependence of the vibrational distribution of in the nightglow and the possible effects of vibrational excitation in the formation of O(1S)

1984 ◽  
Vol 62 (8) ◽  
pp. 780-788 ◽  
Author(s):  
I. C. McDade ◽  
E. J. Llewellyn ◽  
R. G. H. Greer ◽  
G. Witt
Keyword(s):  
Vibrational Relaxation ◽  
Vibrational Excitation ◽  
Relaxation Model ◽  
Terrestrial Atmosphere ◽  
Transfer Step ◽  
Vibrational Distribution ◽  
Altitude Dependence ◽  
Vibrational Levels ◽  
The Individual

A simple vibrational relaxation model that reproduces the observed vibrational distribution of the [Formula: see text] Herzberg II bands in the terrestrial nightglow is used to derive the altitude profiles of the fractional populations in the individual vibrational levels. Through consideration of these profiles it is shown that if [Formula: see text] is the Barth precursor of O(1S) in the nightglow then, at least in the terrestrial atmosphere, the higher vibrational levels appear to be more effective in the Barth transfer step than the lower vibrational levels.

scholarly journals Unravelling the mechanisms of vibrational relaxation in solution

2017 ◽  
Vol 8 (4) ◽  
pp. 3062-3069 ◽  
Author(s):  
Michael P. Grubb ◽  
Philip M. Coulter ◽  
Hugo J. B. Marroux ◽  
Andrew J. Orr-Ewing ◽  
Michael N. R. Ashfold
Keyword(s):  
Vibrational Relaxation ◽  
Chlorinated Solvents ◽  
Time Resolved ◽  
Vibrational Cooling ◽  
Solvent Molecules

Time resolved vibrational cooling towards equilibrium in perfluorinated and chlorinated solvents provides detailed insights into the transfer of energy between solute and solvent molecules.

Vibrational relaxation of CO (v=1) by inelastic collisions with 3He and 4He

1995 ◽  
Vol 103 (7) ◽  
pp. 2528-2537 ◽  
Author(s):  
J. P. Reid ◽  
C. J. S. M. Simpson ◽  
H. M. Quiney ◽  
J. M. Hutson
Keyword(s):  
Vibrational Relaxation ◽  
Inelastic Collisions

scholarly journals Time-resolved mid-infrared dual-comb spectroscopy

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Muhammad A. Abbas ◽  
Qing Pan ◽  
Julien Mandon ◽  
Simona M. Cristescu ◽  
Frans J. M. Harren ◽  
...  
Keyword(s):  
Spectral Resolution ◽  
Vibrational Excitation ◽  
High Spectral Resolution ◽  
Acquisition Time ◽  
Time Resolved ◽  
Short Acquisition Time ◽  
Mid Infrared ◽  
Infrared Wavelength ◽  
Potential Applications ◽  
Kinetics Of

AbstractDual-comb spectroscopy can provide broad spectral bandwidth and high spectral resolution in a short acquisition time, enabling time-resolved measurements. Specifically, spectroscopy in the mid-infrared wavelength range is of particular interest, since most of the molecules have their strongest rotational-vibrational transitions in this “fingerprint” region. Here we report time-resolved mid-infrared dual-comb spectroscopy, covering ~300 nm bandwidth around 3.3 μm with 6 GHz spectral resolution and 20 μs temporal resolution. As a demonstration, we study a CH4/He gas mixture in an electric discharge, while the discharge is modulated between dark and glow regimes. We simultaneously monitor the production of C2H6 and the vibrational excitation of CH4 molecules, observing the dynamics of both processes. This approach to broadband, high-resolution, and time-resolved mid-infrared spectroscopy provides a new tool for monitoring the kinetics of fast chemical reactions, with potential applications in various fields such as physical chemistry and plasma/combustion analysis.

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